.button-item{
    width:100%;
    height: 52px;
    padding-top: 10px;
    button{
      float: right;
      margin-right: 10px;
    }
}
.content-item{
    padding:30px 10px 0 10px;
}
.show{
    display: block;
}
.hide{
    display: none;
}
thead:nth-child(0):nth-child(0){
    width:30px;
}